Author Contribution Statement

The TRR requires that all authors take public responsibility for the content of the work

submitted for review. The contributions of all authors must be described in the following

manner:

The authors confirm contribution to the paper as follows: study conception and

design: X. Author, Y. Author; data collection: Y. Author; analysis and

interpretation of results: X. Author, Y. Author. Z. Author; draft manuscript

preparation: Y. Author. Z. Author. All authors reviewed the results and approved

the final version of the manuscript.

An author name can appear multiple times, and each author name must appear at least

once. For single authors, use the following wording:

The author confirms sole responsibility for the following: study conception and

design, data collection, analysis and interpretation of results, and manuscript

preparation.

Please bear in mind the following criteria for authorship as set out by the ICMJE and as

recommended by the Committee on Publication Ethics (COPE):

The new author list should contain only those who can legitimately claim

authorship. This is all those who:

1. Have made a substantial contribution to the concept or design of the article;

or the acquisition, analysis, or interpretation of data for the article; AND

2. Drafted the article or revised it critically for important intellectual content; AND

3. Approved the version to be published; AND

4. Agreed to be accountable for all aspects of the work in ensuring that

questions related to the accuracy or integrity of any part of the work are

appropriately investigated and resolved.

NB: Registered authors should meet the conditions of all of the points above. All

contributors who do not meet the criteria for authorship should instead be listed

in an `Acknowledgements’ section.